<template>
 <div >111111111</div>
 <childr :num="num"  @changeData="fn"></childr>
</template>

<script setup>
import { ref,onMounted } from "vue";
import childr from './components/childr.vue'
const num=ref(100)

const fn=(val)=>{
  console.log(val)
}
</script>
